Patent US2746826A successfully refreshed from Google Patents.
US2746826A
Expired / Lapsed
US
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Air conditioner installation
Assignee: Individual
•
Filing: 1953-09-17
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Granted: 1956-05-22
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Expires: 1973-09-17
Abstract
No abstract record available.
Inventors
- 👤 Eric P Cahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:47
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US672693A
Cited
GB507285A
Cited
US2316704A
Cited
US2359051A
Cited
US2519085A
Cited
US2638755A
Cited
US2654233A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-22 | 1959-11-21 | 1960-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-22 | 1963-11-21 | 1964-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-22 | 1967-11-21 | 1968-05-22 | $7700.00 | Window Closed / Lapsed |